Why did Xu Shu enter Cao Cao and say nothing?

During the Three Kingdoms period, the world was in chaos. Heroes recruit talents, and people with lofty ideals choose talents, which is a bit like the two-way choice made by some units now. The advantage is that if you break the iron rice bowl, someone will look for you. Obviously, Xu is a good choice. But unfortunately, I want to do something big from now on. Only to find that something happened halfway, which made Xu Shu unable to display his skill. This is just an empty lament. At that time, Xu Shu practiced martial arts first and then devoted himself to literature. After killing, I wandered around the world. Hungry and full, life is uncomfortable. Facing the general trend of the world, Xu Shu wants to get down to business. One of them showed his ambition, and both of them went down in history. However, there are not many people in the world who can enter the eyes of princes. Cao Cao's advisers are like clouds, and he never lacks talents. He can't show his level even if he goes. Sun Quan was born in the second generation of officials, and regarded Zhou Yu and Lu Su as baby bumps. Without referral, he rushed to vote himself and may not be reused. Most of the rest are mediocre people. It's ok to make a living by yourself, but I'm afraid it won't last long. Looking around, Xu Shu took a fancy to Liu Bei. Although this person is temporarily down and out, he has a high reputation and a good reputation. What's more, it is an occasion of employing people, and he will definitely be reused when he goes. Strange goods can be found, and they will never be found. In order to attract Liu Bei's attention, Xu Shu changed the way of the audience, first anonymously, and then sang a folk song about the place where Liu Bei passed. This folk song is well sung, which directly sings Liu Bei's troubles. Liu Beiben, who was in a state of panic and despair, saw this master and suddenly had the heart of acceptance. After some greetings, Xu Shu followed Liu Bei. Xu Shu was careful not to forget to test Liu Bei before he left. When I saw the "Luma" that Liu Bei was riding, I said that this horse was harmful to the owner. I suggested that Liu Bei transfer it to others and ride it after it was harmful to others. As soon as Liu Bei heard what it was, he immediately gave the marching orders, saying that you are not authentic and I dare not use it. When Xu Shu saw this, he was right and wrong. He is a loyal elder, so he is determined to follow. From then on, Xu Shu not only became the first professional recruited by Liu Bei Group, but also became the leading business backbone under Liu Bei's account. Because it is the backbone, the treatment is naturally expensive. Liu Bei was obedient to Xu Shu and took great care of him. Of course, Xu Shu also lived up to expectations and killed Jun again and again. Let nature take its course With the death of his mother, Xu Shu no longer cares. I want to calm down and do something practical. But Cao Cao's reckless behavior made Xu Shu hate his guts. He can't go, and it's uncomfortable to stay. In the past, he was the backbone of Liu Bei Group. Liu Beihan was afraid to put it in his mouth and drop it in his hand. Now trapped in Cao Cao's camp, Cao Cao has achieved the goal of weakening Liu Bei, and he doesn't look at himself as before. There are not many people in Cao Cao's camp, but many. Xu Shu broke away from the old circle and couldn't enter the new circle, so he had to choose silence, saying nothing, and finally became the loneliest person of Cao Cao.